Originally Posted by britlude
had something similar on mine, felt like an engine mount gone or something.....
now i've put the fear of God up you, turns out it was the alternator belt oscillating at a particular revs, in my case it was cold fast idle!
there was a little slack in the belt that turned into a dramatic vibration when is hit it's oscillating sweet spot... tightened the belt and all was well
that might be it, def worth a look!
Good of stuff I'll check that, thank you!
jamie
Platinum Member
Bear this in mind too.
en.wikipedia.org/wiki/V6_engine
1991 Red/Black 1974 Triumph Trident T150V
Administrator
Platinum Member
Have you cleaned your throttle body & PCV valve lately?
Not a misfire?
I thought that the engine was naturally a little unbalanced at idle?
2001 3.2 Circuit Blue Coupe with pop-ups!
"If you want to argue that The Best Car in the World is a supercar, go ahead. But there is only one that makes the grade. Only one that's built properly.
Gordon Murray knows.
Rowan Atkinson knows.
It's the Honda NSX."
(J. Clarkson)
Administrator
Platinum Member
AFAIK only a little but not enough to be felt through the steering wheel.
Platinum Member
I reckon my car now vibrates slighty at idle, particularly when cold. Only noticed it after I had the crank pulley & auxiliary belts changed. Also a momentary resonance at 1200rpm when pulling away in first gear (can't replicate it when stationary in neutral i.e. when engine's not under load).
Car's running absolutely fine (did >1300 miles on the recent Europe Tour without issue).
2001 Honda NSX Indy Yellow SOLD
True.......
2001 3.2 Circuit Blue Coupe with pop-ups!
"If you want to argue that The Best Car in the World is a supercar, go ahead. But there is only one that makes the grade. Only one that's built properly.
Gordon Murray knows.
Rowan Atkinson knows.
It's the Honda NSX."
(J. Clarkson)
It's a 90 degree V6, which is imbalanced even with fudges like offset crankpins and is why it idles like a three-pot and the steering column does vibrate in harmony, especially when cold.
I find it rather an endearing characteristic, its growly rather rough (for a V6) nature. The Toyota V6 in the Evora was just a bit bland.
The J35 in the Leg End has the correct 60 degree included angle and is very smooth and silky. Still has a muted growl in VTEC, though.
In NSX-Ts, it's even more pronounced.
Nick
“I find myself irresistibly attracted to cars that nobody else buys. The NSX is a classic of the genre because nobody buys it and yet it’s a fantastic car. It’s got a wonderful compactness and simplicity and unpretentiousness to it. Honda rudely continues to make them whether we like it or not, even though there can be no commercial logic in doing so — I thoroughly admire that.” Rowan Atkinson
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